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Large-scale complicated target model oriented electromagnetic wave shadow processing method

A complex target and target model technology, applied in the field of electromagnetic wave shadow processing for large-scale complex target models, can solve problems such as difficult to obtain electromagnetic propagation paths, total error expansion, and regions that are not suitable for arbitrary distribution of target models, and achieve the goal of overcoming Boundary rounding error, the effect of overcoming human error

Inactive Publication Date: 2014-08-27
BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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Problems solved by technology

[0011] To sum up, the ray tracing method and its improved algorithm have their limited scope of application: either they are only suitable for regularly distributed areas, but not suitable for areas where the target model is randomly distributed; or the considered environment is an ideal environment, without considering To the diversity of the actual environment, there is still a certain distance from practicality
At the same time, since such methods need to introduce hypothetical rays in advance, some artificial errors will be brought about, resulting in further expansion of the total error, making it difficult to obtain a more accurate electromagnetic propagation path
Therefore, the ray tracing method is only applicable to some typical normative environments, and it is not yet of commercial value and cannot be applied to commercial electromagnetic simulation software tools

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  • Large-scale complicated target model oriented electromagnetic wave shadow processing method
  • Large-scale complicated target model oriented electromagnetic wave shadow processing method
  • Large-scale complicated target model oriented electromagnetic wave shadow processing method

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[0031] The specific implementation of the present invention will be further described below in conjunction with the drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.

[0032] Below as figure 2 The target model shown in the figure is taken as an example for description. The target model shown in the figure is composed of 7 triangular base surfaces; assuming that the incident direction of electromagnetic waves is θ=70°, Due to the irradiation of electromagnetic waves, electromagnetic wave shadows may be generated on partial areas of other base surfaces behind the base surface 7.

[0033] Flow chart as figure 1 An electromagnetic wave shadow processing method for large-scale complex target models shown in, mainly includes the following steps:

[0034] S1. In the incident direction of electromagnetic waves (θ=70°, ) Establish a new coordinate system for the z-axis, and transform the ...

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Abstract

The invention relates to the technical field of electromagnetic wave shadow processing, in particular to a large-scale complicated target model oriented electromagnetic wave shadow processing method. The method does not need grid subdivision in advance, obtained electromagnetic wave shadows have accurate and clear boundaries, accordingly electromagnetic wave shadow boundary round-off errors produced by grid subdivision accuracy by adopting a grid division method are eliminated. In addition, the method does not need any hypothesis and is suitable for electromagnetic wave shadow processing of any complicated target model. In addition, due to the fact that the method does not need beforehand grid subdivision, coordinate information of the electromagnetic wave shadows is only saved in the electromagnetic wave shadow processing process, and occupied system memory and required operation amount can be minimized. Therefore, the method is suitable for electromagnetic wave shadow processing of large-scale complicated target models.

Description

Technical field [0001] The invention relates to the technical field of electromagnetic wave shadow processing, in particular to an electromagnetic wave shadow processing method for large-scale complex target models. Background technique [0002] The research progress based on electromagnetic wave shadow processing is very slow. The reason is that for arbitrarily large and complex target models, the processing of electromagnetic wave shadows in three-dimensional space becomes extremely complicated due to the multiple reflection and refraction of electromagnetic waves. Reflected or refracted electromagnetic waves in non-shaded areas are used as secondary or multiple electromagnetic wave sources to continue to produce new electromagnetic wave shadows, reflecting, refracting and diffracting electromagnetic waves, and the final electromagnetic field at the observation point is the multiple reflections and refractions of electromagnetic waves in these non-shaded areas The result of vec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06T17/30
Inventor 石嵩李华芳
Owner BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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